Directionally solidified Eu doped CaF2/Li3AlF6 eutectic scintillator for neutron detection

Eu doped CaF2/Li3AlF6 eutectics were grown by μ-PD method. The directionally solidified eutectic with well-aligned 600nm diameter Eu:CaF2 scintillator fibers surrounded with Li3AlF6 was prepared. The grown eutectics showed an emission peak at 422nm ascribed to Eu2+ 4f–5d transition from Eu:CaF2 scin...

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Bibliographic Details
Published inOptical materials Vol. 50; pp. 71 - 75
Main Authors Kamada, Kei, Hishinuma, Kousuke, Kurosawa, Shunsuke, Shoji, Yasuhiro, Pejchal, Jan, Ohashi, Yuji, Yokota, Yuui, Yoshikawa, Akira
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2015
Subjects
Eutectic
Micro-pulling down
Scintillator
Scintillator
Eutectic
Micro-pulling down
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Summary:Eu doped CaF2/Li3AlF6 eutectics were grown by μ-PD method. The directionally solidified eutectic with well-aligned 600nm diameter Eu:CaF2 scintillator fibers surrounded with Li3AlF6 was prepared. The grown eutectics showed an emission peak at 422nm ascribed to Eu2+ 4f–5d transition from Eu:CaF2 scintillation fiber. Li concentration in the Eu:CaF2–Li3AlF6 eutectic is around 0.038mol/cm3,which is two times higher than that of LiCaAlF6 single crystal (0.016mol/cm3). The light yield of Eu:CaF2–Li3AlF6 eutectic was around 7000ph/neutron. The decay time was about 550ns (89%) and 1450ns (11%).
ISSN:0925-3467
1873-1252
DOI:10.1016/j.optmat.2015.06.004